EGR Delete + High Flow Intake Elbow Kit – Fits 2004–2005 GMC Sierra 2500HD 3500HD 6.6L LLY Duramax | Includes Block-Off Plates & Coolant Hose

EGR Delete + High Flow Intake Elbow Kit – 6.6L LLY Duramax

This EGR delete and intake elbow kit is designed for 2004–2005 GM trucks equipped with the 6.6L LLY Duramax diesel engine. It replaces restrictive factory EGR components and improves airflow, throttle response, and turbo spool-up.

Key Benefits

• Eliminates EGR flow for cleaner combustion
• Improves throttle response and turbo efficiency
• High-flow intake elbow with rubber seal (O-ring)
• Includes exhaust block-off and coolant reroute hose
• Nickel-plated steel components for corrosion resistance

Fitment Compatibility

• GMC Sierra 2500HD / 3500HD – 6.6L LLY Duramax (May 2004–2005)
• GMC Topkick 4500 / 5500 – 6.6L LLY Duramax (2004–2005)

What's Included

• 1 x High Flow Intake Elbow Tube
• 1 x Rubber Seal (O-ring)
• 1 x Nickel-Plated Steel Exhaust Block-Off Plate
• 1 x Coolant Hose (430mm / 17")
• 2 x Hose Clamps
• 1 x M10 x M20 Hex Head Bolt
• 2 x M8 x 30mm Allen Bolts
• 2 x M10 x 30mm Hex Bolts
• 2 x M8 x 20mm Hex Bolts

Notes

• Only compatible with LLY Duramax engines (VIN “2” or “D”)
• Not for LB7 or LBZ engines – confirm VIN before ordering
• For off-road or race use only – not legal for highway use in emissions-regulated areas
• No instructions included – professional installation recommended

Restore Performance & Reliability

This kit helps eliminate common EGR-related issues such as clogged intake manifolds, excessive soot buildup, and poor throttle response. Ideal for towing, off-road, or performance builds.